Pith Number

pith:NNU5NU7Y

pith:2020:NNU5NU7YNAXG7UGWQ3NMYCLDMR

not attested not anchored not stored refs pending

Steiner Trees for Hereditary Graph Classes: a Treewidth Perspective

Daniel Paulusma, Erik Jan van Leeuwen, Giacomo Paesani, Hans Bodlaender, Matthew Johnson, Nick Brettell

arxiv:2004.07492 v2 · 2020-04-16 · cs.DS · cs.CC · cs.DM · math.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NNU5NU7YNAXG7UGWQ3NMYCLDMR}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

TriMod Fusion for Multimodal Named Entity Recognition in Social Media

Receipt and verification

First computed	2026-07-05T01:59:55.294155Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b69d6d3f8682e6fd0d686dacc0963647dc43b78639091d3c77357b9f0319eed

Aliases

arxiv: 2004.07492 · arxiv_version: 2004.07492v2 · doi: 10.48550/arxiv.2004.07492 · pith_short_12: NNU5NU7YNAXG · pith_short_16: NNU5NU7YNAXG7UGW · pith_short_8: NNU5NU7Y

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/NNU5NU7YNAXG7UGWQ3NMYCLDMR \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 6b69d6d3f8682e6fd0d686dacc0963647dc43b78639091d3c77357b9f0319eed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bad447f5aa864719b8efa5af2fc89d899c05e088914ae40387cc7b0038756485",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2020-04-16T07:27:08Z",
    "title_canon_sha256": "52b593f6a90e00f98a4398dc425923483126572a42f3d86dfac000879dad29b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.07492",
    "kind": "arxiv",
    "version": 2
  }
}